J. E. Aguirre, J. J. Bezaire, and E. S. Cheng, The Spectrum of Integrated Millimeter Flux of the Magellanic Clouds and 30 Doradus from TopHat and DIRBE Data, The Astrophysical Journal, vol.596, issue.1, p.273, 2003.
DOI : 10.1086/377601

H. H. Aumann, J. W. Fowler, and M. Melnyk, A maximum correlation method for image construction of IRAS survey data, The Astronomical Journal, vol.99, p.1674, 1990.
DOI : 10.1086/115448

E. Dwek, The Evolution of the Elemental Abundances in the Gas and Dust Phases of the Galaxy, The Astrophysical Journal, vol.501, issue.2, p.643, 1998.
DOI : 10.1086/305829

F. Galliano, S. C. Madden, and A. P. Jones, ISM properties in low-metallicity environments, Astronomy and Astrophysics, vol.407, issue.1, p.159, 2003.
DOI : 10.1051/0004-6361:20030814
URL : https://hal.archives-ouvertes.fr/hal-00013388

H. Hirashita, Dust???to???Gas Ratio and Metallicity in Dwarf Galaxies, The Astrophysical Journal, vol.522, issue.1, p.220, 1999.
DOI : 10.1086/307621

H. Hirashita, Y. Y. Tajiri, and H. Kamaya, Dust-to-gas ratio and star formation history of blue compact dwarf galaxies, Astronomy and Astrophysics, vol.388, issue.2, p.439, 2002.
DOI : 10.1051/0004-6361:20020605

C. R. Kerton and P. G. Martin, (HIRES) Beam???matched Images, Publications of the Astronomical Society of the Pacific, vol.113, issue.785, p.872, 2001.
DOI : 10.1086/322138

R. J. Laureijs, U. Klaas, P. J. Richards, B. Schulz, P. Abraham et al., The ISO Handbook, Volume IV ? PHT ? The Imaging Photo- Polarimeter Lemke, A&A, pp.315-64, 1996.

C. Bot, Multi-wavelength analysis of the dust emission in the SMC 577

A. Li and B. T. Draine, Infrared Emission from Interstellar Dust. III. The Small Magellanic Cloud, The Astrophysical Journal, vol.576, issue.2, p.762, 2002.
DOI : 10.1086/341796

U. Lisenfeld and A. Ferrara, Dust???to???Gas Ratio and Metal Abundance in Dwarf Galaxies, The Astrophysical Journal, vol.496, issue.1, p.145, 1998.
DOI : 10.1086/305354

U. Lisenfeld and A. Ferrara, Dwarf Galaxies: Probes for Galaxy Formation and Evolution, 1997.

L. Pagani, G. Lagache, and A. Bacmann, L183 (L134N) Revisited, Astronomy & Astrophysics, vol.406, issue.3, p.59, 1993.
DOI : 10.1051/0004-6361:20030903
URL : https://hal.archives-ouvertes.fr/hal-00398470

J. Tumlinson, J. M. Shull, and B. L. Rachford, Survey of Interstellar Molecular Hydrogen in the Small and Large Magellanic Clouds, The Astrophysical Journal, vol.566, issue.2, p.857, 2002.
DOI : 10.1086/338112

D. E. Welty, J. T. Lauroesch, J. C. Blades, L. M. Hobbs, D. G. York et al., Unusual Depletions toward the SMC Star S[CLC]k[/CLC] 155???Differences in Dust Composition in the SMC Interstellar Medium?, The Magellanic Clouds, IAU Symp, pp.75-90, 1991.
DOI : 10.1086/320936

K. Wilke, U. Klaas, and D. Lemke, The Small Magellanic Cloud in the far infrared, Astronomy and Astrophysics, vol.414, issue.1, p.69, 2004.
DOI : 10.1051/0004-6361:20034113

K. Wilke, M. Stickel, and M. Haas, The Small Magellanic Cloud in the far infrared, Astronomy and Astrophysics, vol.401, issue.3, p.873, 2003.
DOI : 10.1051/0004-6361:20021837

F. Galliano, S. C. Madden, A. P. Jones, C. D. Wilson, and J. Bernard, ISM properties in low-metallicity environments, Astronomy and Astrophysics, vol.434, issue.3, p.867, 2005.
DOI : 10.1051/0004-6361:20042369
URL : https://hal.archives-ouvertes.fr/hal-00013388

E. Habart, F. Boulanger, and L. Verstraete, $\mathsf{H_2}$ infrared line emission across the bright side of the $\rho$ Ophiuchi main cloud, Astronomy & Astrophysics, vol.397, issue.2, p.623, 2003.
DOI : 10.1051/0004-6361:20021489

E. Habart, F. Boulanger, L. Verstraete, C. M. Walmsley, and G. Pineau-des-forêts, Some empirical estimates of the H$\mathsf{_2}$ formation rate in photon-dominated regions, Astronomy & Astrophysics, vol.414, issue.2, p.531, 2004.
DOI : 10.1051/0004-6361:20031659

G. Helou, H. Roussel, and P. Appleton, The Anatomy of Star Formation in NGC 300, The Astrophysical Journal Supplement Series, vol.154, issue.1, p.253, 2004.
DOI : 10.1086/422640

J. R. Houck, V. Charmandaris, and B. R. Brandl, The Extraordinary Mid???infrared Spectrum of the Blue Compact Dwarf Galaxy SBS 0335???052, The Astrophysical Journal Supplement Series, vol.154, issue.1, p.211, 2004.
DOI : 10.1086/423137

D. G. Hummer and P. J. Storey, Recombination-line intensities for hydrogenic ions - I. Case B calculations for H I and He II, Monthly Notices of the Royal Astronomical Society, vol.224, issue.3, p.801, 1987.
DOI : 10.1093/mnras/224.3.801

A. P. Jones, A. G. Tielens, and D. J. Hollenbach, Grain Shattering in Shocks: The Interstellar Grain Size Distribution, The Astrophysical Journal, vol.469, p.740, 1996.
DOI : 10.1086/177823

G. Lagache, H. Dole, and J. Puget, ??? 2, The Astrophysical Journal Supplement Series, vol.154, issue.1, p.112, 2004.
DOI : 10.1086/422392

N. Lu, G. Helou, and M. W. Werner, Spectra, Near???Infrared Continuum, and Mid???Infrared Emission Features, The Astrophysical Journal, vol.588, issue.1, p.199, 2003.
DOI : 10.1086/374043

P. Massey and D. A. Hunter, Spectroscopy, The Astrophysical Journal, vol.493, issue.1, p.180, 1998.
DOI : 10.1086/305126

K. A. Misselt, G. C. Clayton, and K. D. Gordon, A Reanalysis of the Ultraviolet Extinction from Interstellar Dust in the Large Magellanic Cloud, The Astrophysical Journal, vol.515, issue.1, p.128, 1999.
DOI : 10.1086/307010

A. B. Peck, W. M. Goss, and H. R. Dickel, Australia Telescope Compact Array Observations of Radio Recombination Lines toward 30 Doradus, The Astrophysical Journal, vol.486, issue.1, p.329, 1997.
DOI : 10.1086/304508

A. Poglitsch, A. Krabbe, and S. C. Madden, A Multiwavelength Study of 30 Doradus: The Interstellar Medium in a Low-Metallicity Galaxy, Boulanger et al.: Dust grinding and destruction in 30 Doradus, pp.293-307, 1995.
DOI : 10.1086/176482

H. Roussel, M. Sauvage, L. Vigroux, and A. Bosma, The relationship between star formation rates and mid-infrared emission in galactic disks, Astronomy and Astrophysics, vol.372, issue.2, p.427, 2001.
DOI : 10.1051/0004-6361:20010498
URL : https://hal.archives-ouvertes.fr/cea-01262018

B. D. Savage, E. L. Fitzpatrick, J. P. Cassinelli, and D. C. Ebbets, The nature of R136a, the superluminous central object of the 30 Doradus nebula, The Astrophysical Journal, vol.273, p.597, 1983.
DOI : 10.1086/161395

K. Sellgren, The near-infrared continuum emission of visual reflection nebulae, The Astrophysical Journal, vol.277, p.623, 1984.
DOI : 10.1086/161733

K. Sellgren, L. J. Allamandola, J. D. Bregman, M. W. Werner, and D. H. Wooden, Emission features in the 4-13 micron spectra of the reflection nebulae NGC 7023 and NGC 2023, The Astrophysical Journal, vol.299, p.416, 1985.
DOI : 10.1086/163710

K. Sellgren, M. W. Werner, and H. L. Dinerstein, Extended near-infrared emission from visual reflection nebulae, The Astrophysical Journal, vol.271, p.13, 1983.
DOI : 10.1086/184083
URL : http://hdl.handle.net/2060/19830017358

E. Sturm, M. Scweitzer, L. D. Vermeij, R. Peeters, E. Tielens et al., Silicate Emissions in Active Galaxies: From LINERs to QSOs, The Astrophysical Journal, vol.629, issue.1, pp.21-1042, 2002.
DOI : 10.1086/444359

G. M. Voit, Destruction and survival of polycyclic aromatic hydrocarbons in active galaxies, Monthly Notices of the Royal Astronomical Society, vol.258, issue.4, p.841, 1992.
DOI : 10.1093/mnras/258.4.841

Q. D. Wang, J. C. Weingartner, and B. T. Draine, Structure and Evolution of Hot Gas in 30 Dor, The Astrophysical Journal, vol.510, issue.2, pp.139-296, 1999.
DOI : 10.1086/311823

S. P. Willner and K. Nelson-patel, Regions of M33, The Astrophysical Journal, vol.568, issue.2, p.679, 2002.
DOI : 10.1086/339032

A. Appendix, Radiation field at the eastern ionization front and PDR The radiation field is a key input of the dust model presented in section 7.1. We describe here how we estimate it

C. Bot, F. Boulanger, K. Okumura, and B. Stepnik, Multi-wavelength analysis of the dust emission in the Small Magellanic Cloud, Proc. of symp. " Exploiting the ISO data archive -Internet Astronomy in the Internet Age Gry et al. eds., ESA SP 511, pp.24-27, 2002.
DOI : 10.1051/0004-6361:20035918
URL : https://hal.archives-ouvertes.fr/hal-00011265

N. Mizuno, M. Rubio, A. Mizuno, and R. Yamaguchi, First Results of a CO Survey of the Small Magellanic Cloud with NANTEN, Publications of the Astronomical Society of Japan, vol.53, issue.6, pp.45-49, 2001.
DOI : 10.1093/pasj/53.6.L45

S. Geman and D. Geman, Stochastic relaxation, Gibbs distributions and the Bayesian restoration of images, IEEE Transactions on Pattern Analysis and Machine Intelligence, issue.6, pp.721-741, 1984.

C. Graffigne, F. Heitz, P. Pérez, F. Prêteux, M. Sigelle et al., <title>Hierarchical Markov random field models applied to image analysis: a review</title>, Neural, Morphological, and Stochastic Methods in Image and Signal Processing, pp.10-11, 1995.
DOI : 10.1117/12.216341

C. A. Bouman and M. Shapiro, A multiscale random field model for Bayesian image segmentation, IEEE Transactions on Image Processing, vol.3, issue.2, pp.162-177, 1994.
DOI : 10.1109/83.277898

Z. Kato, M. Berthod, and J. Zérubia, A Hierarchical Markov Random Field Model and Multitemperature Annealing for Parallel Image Classification, Graphical Models and Image Processing, vol.58, issue.1, pp.18-37, 1996.
DOI : 10.1006/gmip.1996.0002
URL : https://hal.archives-ouvertes.fr/inria-00074736

M. Mignotte, C. Collet, P. Pérez, and P. Bouthemy, Sonar image segmentation using an unsupervised hierarchical MRF model, IEEE Transactions on Image Processing, vol.9, issue.7, pp.1-17, 2000.
DOI : 10.1109/83.847834

M. R. Luettgen, W. C. Karl, A. S. Willsky, and R. Tenney, Multiscale representations of Markov random fields, IEEE Transactions on Signal Processing, vol.41, issue.12, pp.3377-3395, 1993.
DOI : 10.1109/78.258081

P. Rostaing, J. Provost, and C. Collet, Unsupervised Multispectral Image Segmentation Using Generalized Gaussian Noise Model, Proc. International Workshop EMMCVPR'99 : Energy Minimisation Methods in Computer Vision and Pattern Recognition, pp.141-156, 1999.
DOI : 10.1007/3-540-48432-9_11

C. Bot, F. Boulanger, K. Okumura, and B. Stepnik, Multiwavelength analysis of the dust emission in the small magellanic cloud, Proc. of symp. " Exploiting the ISO data archive - Internet Astronomy in the Internet Age Gry et al. eds., ESA SP 511, pp.24-27, 2002.
URL : https://hal.archives-ouvertes.fr/hal-00011265

M. Louys, A. Oberto, C. Bot, and C. Collet, Hierarchical markovian inference for astronomical multiband images segmentation, Physics in Signal and Image Processing, PSIP 2003, pp.61-64, 2003.

S. Geman and D. Geman, Stochastic relaxation, Gibbs distributions and the Bayesian restoration of images, IEEE Transactions on Pattern Analysis and Machine Intelligence, issue.6, pp.721-741, 1984.

P. Pérez and F. Heitz, Restriction of a Markov random field on a graph and multiresolution statistical image modeling, IEEE Transactions on Information Theory, vol.42, issue.1, pp.180-190, 1996.
DOI : 10.1109/18.481788

J. Laferté, P. Pérez, and F. Heitz, Discrete Markov image modeling and inference on the quadtree, IEEE Transactions on Image Processing, vol.9, issue.3, pp.390-404, 2000.
DOI : 10.1109/83.826777

N. Giordana and W. Pieczynski, Estimation of generalized multisensor hidden Markov chains and unsupervised image segmentation, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.19, issue.5, pp.465-475, 1997.
DOI : 10.1109/34.589206

W. Pieczynski, Statistical image segmentation Machine Graphics and Vision, pp.261-268, 1992.